Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

21685871 (number)

21685871 is an odd 8-digits composite number following 21685870 and preceding 21685872. In scientific notation, it is written as 2.1685871 × 10^7. The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors. There are 21520200 positive integers (up to 21685871) that are relatively prime to 21685871.

Interesting facts

21685871 has 4 divisors, whose sum is 21851544
The reverse of 21685871 is 17858612
Previous prime number is 131

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	twenty-one million six hundred eighty-five thousand eight hundred seventy-one

Notation

Scientific notation	2.1685871 × 10^7
Engineering notation	2.1685871 × 10^6

Prime Factorization of 21685871

Prime Factorization 131 × 165541

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21685871	Product of the distinct prime numbers

The prime factorization of 21685871 is 131 × 165541. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 6, 66, 64, 426, 918, 5571, 8488, 17172, 67400, 303363, 610774, 3853161, 2895336, 62715438, 53995104, 969835857, 511888533, 5881047676, 2374236419

Basic calculations (n = 21685871)

Multiplication

n×y

n×2	43371742
n×3	65057613
n×4	86743484
n×5	108429355

Division

n÷y

n÷2	10842935.5
n÷3	7228623.6666667
n÷3	5421467.75
n÷5	4337174.2

Exponentiation

n^y

n²	470277001028641
n³	1.0198366378574E+22
n⁴	2.2116045769649E+29
n⁵	4.7960571559071E+36

Nth Root

^y√n

²√n	4656.8091006611
³√n	278.86389562312
⁴√n	68.240816969473
⁵√n	29.324821280861

Divisors of 21685871

1, 131, 165541, 21685871

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21685870	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21685871 can be divided by 4 positive divisors. The sum of these divisors (counting 21685871) is 1, the average is 0.25.

Base conversion 21685871

Base	System	Value
2	Binary	1010010101110011001101111
3	Ternary	1111210202102102
4	Quaternary	1102232121233
5	Quinary	21022421441
6	Senary	2052445315
8	Octal	122563157
10	Decimal	21685871
12	Duodecimal	731983b
16	Hexadecimal	14ae66f
20	Vigesimal	6faedb
36	Base36	cwsxb

Cryptographic Hash Functions

md5	9ef28294c7729bf00333861255f79fed
sha1	76e783baa03ff14821ab873b8e87d5836d9a138a
sha256	2db0845f1437027000f44b68609179d72c65faac8d86619d02b7d01cc754df62
sha512	6ed5581c9d23cdc418d7dc82a64ae949ada41ecdd1c01b4fb0473a0f01d661bfdbacf156e290c6e7189685eaff31e9d07359dd03cdc532173d95a79af28094ae
ripemd-160	342dbfbbe8759affd68297c28a82aa6d8960203f

21685871 as geometric shapes

Circle

Radius = n

Diameter	43371742
Circumference	136256346.04059
Area	1.4774187715838E+15

Sphere

Radius = n

Volume	4.2718817191394E+22
Surface area	5.9096750863353E+15
Circumference	136256346.04059

Square

Length = n

Perimeter	86743484
Area	470277001028641
Diagonal	30668452.880073

Cube

Length = n

Surface area	2821662006171846
Volume	1.0198366378574E+22
Space diagonal	37561030.378384

Equilateral Triangle

Length = n

Perimeter	65057613
Area	2.0363591485318E+14
Altitude	18780515.189192

Triangular Pyramid

Length = n

Surface area	2.0363591485318E+14
Volume	1.2018890038858E+21
Height	10222817.626691